.main_nav{
	width:1150px;
}
.main_nav ul{
	overflow:hidden;
}
.main_nav ul li{
	float:left;
	background:#ccc;
	margin-right:2px;
	margin-bottom:10px;

}
.main_nav ul li a{
	text-align:center;
	display:block;
	width:285px;
	height:40px;
	line-height:40px;
}
.main_nav ul li a:link,.main_nav ul li a:visited{
	color:#eee;
	text-decoration:none;
}
.main_nav ul li a:hover,.main_nav ul li a:active{
	color:#eee;
	background:#ffa72b;
	text-decoration:none;
}
.main_dsc{
	width:1150px;
	margin:0 auto;
	padding-bottom:720px;
}
.main_dsc h2{
	margin:42px 0 50px 12px;
	height:24px;
	background:url(images/about_wengdo.png) no-repeat;
	text-indent:-9999px;
}
.main_dsc p{
	margin-bottom:37px;
}


